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Finding the Fourth Proportional to 251.55, 379.21 and 234.83

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Solution

The fourth proportional to 251.55, 379.21 and 234.83 is: 354.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.55 : 379.21 = 234.83 : x
  2. Step 2: Convert to fraction form
    251.55/379.21 = 234.83/x
  3. Step 3: Cross multiply
    251.55x = 379.21 × 234.83
  4. Step 4: Simplify right side
    251.55x = 89,049.88
  5. Step 5: Solve for x
    x = 89,049.88/251.55
  6. Step 6: Final answer
    x = 354.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.